Kelly explains the crucial differences in clean energies, and why solar may soon lead the way.
Om Podcasten
"The Exchange" on CNBC is a one-stop shop for the day's top business stories, along with breaking news and the must-see market movers heading into the back half of the trading day. This newsroom-based program also features lots of original reporting, in-depth conversations and showcases CNBC's award-winning investigative work.